// Copyright (C) 2013 The Android Open Source Project // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. package com.google.gerrit.httpd; import static java.nio.charset.StandardCharsets.UTF_8; import com.google.gerrit.common.Nullable; import com.google.inject.Inject; import com.google.inject.Provider; import java.io.UnsupportedEncodingException; import java.net.URLDecoder; import javax.servlet.http.HttpServletRequest; public class CanonicalWebUrl { private final Provider configured; @Inject CanonicalWebUrl( @com.google.gerrit.server.config.CanonicalWebUrl @Nullable Provider provider) { configured = provider; } public String get(HttpServletRequest req) { String url = configured.get(); return url != null ? url : computeFromRequest(req); } static String computeFromRequest(HttpServletRequest req) { StringBuffer url = req.getRequestURL(); try { url = new StringBuffer(URLDecoder.decode(url.toString(), UTF_8.name())); url.setLength(url.length() - req.getServletPath().length()); if (url.charAt(url.length() - 1) != '/') { url.append('/'); } return url.toString(); } catch (UnsupportedEncodingException e) { throw new IllegalStateException("Unsupported encoding for request URL " + url, e); } } }